Self-filling fountain-pen



H'. LEWINSON.' SELF FILLING FOUNTAIN PEN| APPLICATION FILED FEB. 2I, 1921,

Patented Oct. 4, 192K..

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nur seres naar eaten,

HYMAN LESON, OF ERIE, PENNSYLVANIA.

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Specification of Letters Patent.

Application led February 21; 1921. Yerial No. 446,756.

plunger.

The invention is illustrated in the accompanying drawings as follows Figure l shows a central sectionof the pen with the parts in position for use. l

Fig. 2 an elevation, partly in section, showing the parts in the position which they assume in filling.

Fig. 3 a plan view of the plunger.

l marks the barrel, 2 the closing plug at the bottom of the barrel, 3 the pen, and a the feeding opening leading to the pen.

A plunger 5 is mounted in the barrel surrounded with the yielding ring 6 to assure a tight 4'-jo'int. The plunger is actuated by a stem 7 which |extends through the top of the barrel. A valve 8 is formed on the lower end of the plunger and operates on a valve seat 9 to open and close a passage -10 through the plunger. rlhe stem is provided with a pin 11 which is adapted to enter a key-hole slot l2 and to turn in a socket 13 so as to lock the stem with the plunger with the valve 8 open. i

rlhe upper end of the barrel is screwthreaded. A valve plate l5 is screwed into this' screw-threaded opening provided with avalve 16 on which a valve 17 operates. 'llhe valve has a frictional engagement with the stem 7 so that as the stem is pulled out-V wardly the valve is opened and when the .stem is'pulled inwardly the valve is closed.

A closure plate 18 is screwed into the end of the barrel. rThis has a vent-opening all . 20. 'lfhe stem extends through the plate 18 and is provided with a cap 19 by means of which the stem may be conveniently operated and which when the pen is in position for use inishes the top end ofy the barrel. The usual guard cap 2l is provided which is slipped over the lower end of the barrel when-the pen is not in use and over the top of the barrel when the pen is in-use.

in order that the inlr may be readily expelled from the barrel when desired il pre fer to provide a cam 22 above the plunger which will engage the pin lliif the stein is turned when the 'valve is seated. This will lock the valve on its seat and the plun' ger' will then move with the stem and ink may be expelled or drawn in as desired so that the pen may be thoroughly cleaned.

What l claim as new is 1. In a self-filling pen, the combination of a barrel having a feeding opening in the bottom; a plunger in the barrel; an axially moving valve in the plunger; a stem acting on the valve to close the valve as the plunger is withdrawn and to open'the valve as the plunger is advanced; and means for detachably lockingthe stem with the plunger with the valve in open'position.

2. ln a self-filling pen; the combination of a barrel having a feeding opening in the bottom thereof; a plunger in the barrel, the plunger having an opening therethrough with a locking slot therein; a valve acting on the plunger to close the opening; a stem acting on the valve to close the opening in the plunger as the plunger is withdrawn and to open the same as the plunger is advanced; and a shoulder on the stem operating in the locking slot to detachably connect the plunger with the stem.

3. ln a self-filling pen, the combination of a barrel having a feeding opening at the bottom; a valve plunger in the barrel; `a valve plate at the top of the barrel; a valve operating on the plate; and a stem extending from the plunger and actuating lthe valve to open the same as the plunger is withdrawn and to close the same as the plunger is ad vanced.

t. ln a self-filling pen, the combination of a barrel having a feeding opening at the bottom; a valve plunger in thebarrel; a valve plate at the top of 'the barrel; a valve operating on the plate; a stem entending from the plunger and actuating the valve to open the same as the plunger is withdrawn and kto close the same as the plunger is advanced; and a ventedclosure cap above the valve plate.

5. ln a self-filling pen, the combination- Patented (Det. 4i; tgil.

l ger 4is advanced; 'and a vented closure at the top of the barrel.l

6. In a self-filling en, the combination of a barrel having a eeding opening in the bottom; a plunger in the barrel; an axially moving valve in the plunger; a stem acting on the valve; and'mea'ns actuated by the stem for locking the valve in closed position.

7. In a self-filling pen, the Vcombination stem for locking the valve in closed or open l5 position.

In testimony whereof .I have hereunto set my hand.

HYMAN LEWiNsoN. 

